Help! wondering what the pros think we have on our hands

when we bought our first 10 chickies, we bought 5 assorted reds, assorted pullets, and then I went back and got 6 more assorted reds. do you have any ideas of the ones I have pics of? I am curious about the chicks with speckled wings, but I haven't got a clue which batch of purchases they came from. this is our first time having chicks (or chickens at all for thatmatter) so any help or suggestions are welcomed and appreciated!

I think the ones with the longest wings are the last ones that i got.

^^ I have a few that seem to be lacking in the wing growth department, compared to the others and they are all the same age, I should add (plus or minus a day)
roo or pullet?^^